Exchange in the car last night:
"AK, tomorrow when mommy and me pick you up, guess what you are going to do?"
"Go on the playground?"
"No. You are going to run right to me and give me a hug. Don't run to mommy."
"But I love her so much, LP. When I love you so much, I will run to you."
Me, interjecting, "AK, you love LP very much. She is your sister."
"Okay, LP, tomorrow I will run to you."
"When you promise it means that you really want to do something. Actually, I don't really know what it means, but that is what I think it means. So remember - you promised to run to me tomorrow, not mommy."